The application doesn't support original Superuser and not SuperSU for a very simple reason. The same feature OTA protection feature is already present in SuperSU.

In most case, only manufacturer's original recovery is able to install OTAs. It should not interfere with OTA update process itself.

A bonus feature is present, allowing you to un-root your device while keeping a su backup.This way you can naively hide root until you choose to restore it via without further complications.This nifty feature work on every rooted device.

** Temporary un-root statement **

This feature is designed for dev purposes in order to test their app with or without root.The goal here is not to encourage stupid and unacceptable behaviors by movie or content sellers trying to prevent you to purchase or watch digital media you purchased if your device is rooted.Vote with your dollars: Don't accept being a customer of companies restricting your freedom with defective and and inefficient technical measures.

Notes:- Please help making the app work on devices I don't know/own instead of giving useless bad ratings.- It seems I have to repeat that. Comments & rating doesn't help fixing bugs. Take responsibility if you want problem solved.